Realistic Pseudoscalar - Vector Lagrangian. 2. Static and Dynamical Baryon Properties
Nov, 1988
6 pages
Published in:
- Phys.Rev.D 39 (1989) 1956-1972,
- Phys.Rev.D 40 (1989) 262 (erratum)
DOI:
- 10.1103/PhysRevD.39.1956,
- 10.1103/PhysRevD.40.262 (erratum)
Report number:
- MIT-CTP-1630,
- NBI-HE-88-58,
- SU-4228-397
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Abstract: (APS)
We investigate electromagnetic and axial-vector currents and the corresponding form factors as well as meson-nucleon form factors within the framework of a nonlinear chiral Lagrangian constructed by Jain, Johnson, Meissner, Park, and Schechter in Phys. Rev. D 37, 3252 (1988). We employ an unambiguous procedure to construct the electroweak current densities. This brings in a parameter, related to the ω→π0γ decay rate, which does not appear in the strong-interaction part of the Lagrangian. This results in a fairly accurate description of the nucleons’ properties. The effects of coupling to a two-flavor ‘‘η meson’’ are shown to be small.- FIELD THEORY: EFFECTIVE LAGRANGIANS
- SYMMETRY: CHIRAL
- FIELD EQUATIONS: SOLITON
- QUANTIZATION: semiclassical
- OMEGA(783): RADIATIVE DECAY
- RADIATIVE DECAY: OMEGA(783)
- OMEGA(783): WIDTH
- VERTEX FUNCTION: (2NUCLEON MESON)
- NUCLEON: FORM FACTOR
- FORM FACTOR: NUCLEON
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